Officers are examining a house in Martyrs Avenue, Langley Green, Crawley, West Sussex, after reports that a UK jihadi, who used the name Abu Suleiman al-Britani, carried out the deadly bombing.

He is said to have driven a lorry into a jail in Aleppo and detonated a bomb last week, and is thought to be the first Briton to stage a suicide attack in the war-torn state, where increasing numbers of UK-born extremists have gone to fight.